JP6666657B2 - Display device - Google Patents

Description

  The present invention relates to a display device that displays a stereoscopic image.

  2. Description of the Related Art Conventionally, there has been known a display device capable of three-dimensionally expressing a three-dimensional image so as to express a realistic image having three-dimensionality. In general, a three-dimensional image representing three dimensions is formed based on the principle of stereo vision through both eyes. Since the eyes are separated by about 65 mm, an image with a three-dimensional effect can be shown using the binocular parallax.

  As a technique for displaying a stereoscopic image, there are a stereoscopic image display of an eyeglass type and a stereoscopic image display of a non-eyeglass type. Among these, as a stereoscopic image display system without glasses, a parallax barrier system that allows images to be separated and observed through vertical lattice-shaped openings before each image corresponding to the left and right eyes, There are known a lenticular system using a lenticular plate in which semi-cylindrical lenses are arranged in a stripe shape, and an integral photography system using a fly-eye lens plate.

  The above-mentioned method can also be said to be a parallax method which is a method of embodying a three-dimensional image by enabling the left / right-eye stereoscopic images (left / right-eye viewpoint images) to be viewed separately. Among the above methods, for example, the parallax barrier method has a slit-shaped opening arranged in a vertical or horizontal direction with respect to one surface of a display element on which image information for the left / right eyes is displayed. By placing a parallax barrier that blocks the image that is to be incident on the left eye and blocks the image that is to be incident on the right eye for the left eye, Finally, the user can view a three-dimensional stereoscopic image.

  Here, one pixel in the above-described display device is constituted by sub-pixels of a plurality of colors such as RGB. For example, a stereoscopic image display device in which RGB sub-pixels are repeatedly arranged in a vertical direction is known (for example, Patent Document 1). Further, there is also known a stereoscopic image display device in which a striped barrier is arranged in each of a vertical direction and a horizontal direction so that a stereoscopic image can be visually recognized even when the screen is rotated by 90 degrees.

JP 2012-182569 A

  In the three-dimensional image display device having the configuration in which the vertical and horizontal barriers are provided as described above, since the RGB sub-pixels are repeatedly arranged in the vertical direction, for example, the screen is rotated by 90 degrees to view the screen. In such a case (for example, when switching from the portrait mode to the landscape mode for visual recognition), there is a problem that the increase / decrease rate of each of the amounts of RGB incident on the right eye and the left eye is different. Specifically, first, it is assumed that the screen is visually recognized in the portrait mode (the screen in the vertical mode). In the case of this screen, it is assumed that the sub-pixels are arranged in the vertical direction (as viewed from the observer's eyes) in the order of R, G, and B. In a situation where the viewer is visually recognizing such a screen, the position of both eyes is slightly shifted (shifted) to the left or right from a position (for example, the front) appropriate for the observer to view the stereoscopic display. I do. For example, when the parallax barrier is slightly shifted to the left, the parallax barrier is shifted to the right as a whole. That is, the parallax barrier overlaps a part of the sub-pixel. Even in such a case, in the portrait mode, the subpixels of the RGB subpixels are arranged in the vertical direction, so that the parallax barrier overlaps the RGB subpixels equally. Therefore, the amounts of red, green, and blue incident on the right eye and the left eye decrease or increase in the same manner.

  On the other hand, it is assumed that the screen is rotated 90 degrees from the above state and the screen is visually recognized in the landscape mode. In this case, the sub-pixels are arranged in the order of RGB in the horizontal direction when viewed from the observer. That is, when viewed from the observer, each of the red, green, and blue sub-pixels is vertically aligned in a vertical direction. Then, in such a state, it is assumed that the position of both eyes slightly moves to the left from a position appropriate for the observer to view the stereoscopic display as described above (the parallax barrier is entirely To the right.) In this case, as the image viewed by the observer, the area of the blue sub-pixel B among the red, green, and blue sub-pixels increases, and the area of the red sub-pixel R decreases, and the image takes on a blue color. . As a result, for example, even if an attempt is made to express white color using this pixel, a situation occurs in which beautiful white color is not obtained as compared with the case of the portrait mode. That is, there is a problem that the color display quality is deteriorated.

  Therefore, an object of the present invention is to provide a display device capable of displaying a three-dimensional image, in which a three-dimensional image can be visually recognized even when the screen is changed from a predetermined posture, to improve color display quality before and after the change. It is an object of the present invention to provide a display device which can be maintained at a high speed.

  In order to achieve the above object, for example, the following configuration examples are given.

  A display device for displaying a stereoscopic image composed of a right-eye image and a left-eye image, comprising: an image display unit, a display mode setting unit, a parallax barrier forming unit, and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of right-eye pixels and left-eye pixels are arranged in the horizontal and vertical directions. The display mode setting means sets at least one of the vertical display mode and the horizontal display mode. The parallax barrier forming unit forms a parallax barrier according to the setting by the display mode setting unit. The image control unit controls the image display unit according to the setting by the display mode setting unit. Each of the right-eye pixel and the left-eye pixel includes at least one or more red, blue, and green sub-pixels. When the vertical display mode is set, the image control unit does not color the sub-pixels at every first interval in the horizontal direction, and colors the sub-pixels at every second interval in the vertical direction, When the horizontal display mode is set, the sub-pixels are not colored at every second interval in the vertical direction, but are colored at the first interval in the horizontal direction.

  As another configuration example, the sub-pixel on which the color control / non-color control is performed by the image control unit may be any one of red, blue, and green. Further, the sub-pixel may be green.

  As another configuration example, the number of sub-pixels in each of the right-eye pixel and the left-eye pixel of a color for which color control / non-color control is performed by the image control unit is greater than the number of sub-pixels of other colors. May be. Further, the total area of the sub-pixels may be larger than the total area of each sub-pixel of another color.

  As another configuration example, in a stereoscopic pixel, a sub-pixel of another color is not arranged in a column and a row in which a sub-pixel of a color to be controlled to be colored / non-colored by an image control unit is arranged. You may comprise.

  As another configuration example, in a stereoscopic pixel, at least one or more columns and rows adjacent to columns and rows in which only sub-pixels of a color for which color control / non-color control is performed by the image control unit are arranged. Red, blue, and green sub-pixels may be arranged.

  As another configuration example, when the vertical display mode is set, the image control unit does not color the sub-pixels in the column for each column at the first interval in the horizontal direction, The sub-pixels in the row may be colored for each row at intervals of 2. Further, when the horizontal display mode is set, in the vertical direction, the sub-pixels in the row are not colored in every row at the second interval, and in the horizontal direction, the sub-pixels in the row at the first interval are not colored. May be colored.

  As another configuration example, when the vertical display mode is set, the image control unit does not cause the even-numbered sub-pixels to be colored in the horizontal direction and is arranged in the even-numbered sub-pixels in the vertical direction. When the horizontal display mode is set, the sub-pixels arranged at even-numbered positions in the vertical direction are not colored, and the sub-pixels arranged at even-numbered positions in the horizontal direction are not colored. It may be colored. Alternatively, when the vertical display mode is set, the image control unit does not color the odd-numbered sub-pixels in the horizontal direction, and sets the odd-numbered sub-pixels in the vertical direction. When the horizontal display mode is set, even if the odd-numbered sub-pixels are not colored in the vertical direction, the odd-numbered sub-pixels are colored in the horizontal direction. good.

  As another configuration example, at least four sub-pixels may be arranged in each of the stereoscopic pixel in the horizontal direction and the vertical direction.

  As another configuration example, the width of each sub-pixel of a color for which the image control unit selectively controls coloring / non-coloring may be narrower than the width of the other color sub-pixels.

  As another configuration example, the width of each sub-pixel of a color for which the image controller selectively controls coloring / non-coloring may be the same as the width of sub-pixels of other colors.

  As another configuration example, at least one non-arranged area where no sub-pixel is arranged may be provided at a position adjacent to the sub-pixel where the color control / non-color control is selectively performed by the image control unit.

  As another configuration example, at least one sub-pixel not to be colored when a stereoscopic image is displayed is provided at a position adjacent to the sub-pixel where the color control is selectively performed or not performed by the image control unit. May be.

  As another configuration example, the stereoscopic pixel may include at least one or more sub-pixels of colors other than red, blue and green, and the colors of the sub-pixels of colors other than red, blue and green are yellow and It may be at least one of white.

  As another configuration example, the first interval and the second interval may be the same interval.

  As another configuration example, in a stereoscopic pixel, the color of one sub-pixel is a sub-pixel whose color is substantially symmetric with respect to a diagonal line extending from upper left to lower right or upper right to lower left of the stereoscopic pixel. Each sub-pixel may be arranged so as to have the same color.

  As another configuration example, in a stereoscopic pixel, each sub-pixel has the same color as the color of a sub-pixel at a position substantially point-symmetric to a specific position of the stereoscopic pixel. Sub-pixels may be arranged.

  As another configuration example, the arrangement order of the red, blue, and green sub-pixels in one of the right-eye pixel and the left-eye pixel in a predetermined direction, and the predetermined order of the red, blue, and green sub-pixels in the other pixel Each sub-pixel may be arranged so as to be different from the arrangement order in the direction.

  As another configuration example, in a stereoscopic pixel, at least one red, blue, and green sub-pixel is arranged in a predetermined order in a horizontal direction starting from an upper left or an upper right, and at least one red sub-pixel is also arranged in a vertical direction. , Blue and green sub-pixels may be arranged in the same order as the predetermined order.

  Another example of the configuration example is a display device that displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of a plurality of viewpoint pixels are arranged in the horizontal and vertical directions. The image control unit controls the image display unit. Further, each of the plurality of viewpoint pixels is configured by a plurality of sub-pixels including at least a first basic color and a second basic color sub-pixel which are basic for expressing a color. Then, the image control unit performs control of selectively coloring / not coloring sub-pixels at predetermined intervals in the horizontal direction and the vertical direction.

  Another example of the configuration example is a display device that displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of a plurality of viewpoint pixels are arranged in the horizontal and vertical directions. The image control unit controls the image display unit. Each of the plurality of viewpoint pixels is configured by a plurality of sub-pixels. At least one or more red, blue, and green sub-pixels are arranged in the stereoscopic pixel, and the color of one sub-pixel extends from the upper left to the lower right or from the upper right to the lower left of the stereoscopic pixel. Each sub-pixel is arranged so as to have the same color as that of the sub-pixel located substantially symmetrically with respect to the diagonal line.

  Another example of the configuration example is a display device that displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels constituted by a plurality of viewpoint pixels are arranged in a horizontal direction and a vertical direction. The image control unit controls the image display unit. Each of the plurality of viewpoint pixels is configured by a plurality of sub-pixels. At least one or more red, blue, and green sub-pixels are arranged in the stereoscopic pixel, and the color of one sub-pixel is substantially point-symmetric with a specific position of the stereoscopic pixel. Are arranged so that the color of the sub-pixel is the same as that of the sub-pixel.

  Another example of the configuration example is a display device that displays a stereoscopic image composed of a right-eye image and a left-eye image, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of right-eye pixels and left-eye pixels are arranged in the horizontal and vertical directions. The image control unit controls the image display unit. In addition, at least one red, blue, and green sub-pixel is arranged in each of the right-eye pixel and the left-eye pixel. Further, the arrangement order of the red, blue, and green sub-pixels in one of the right-eye pixel and the left-eye pixel in a predetermined direction, and the arrangement order of the red, blue, and green sub-pixels in the predetermined direction on the other side. Are arranged differently. Here, the arrangement order of the red, blue, and green sub-pixels in one of the right-eye pixel and the left-eye pixel in a predetermined direction, and a stereoscopic pixel formed by the right-eye pixel and the left-eye pixel May be the same as the arrangement order of the red, blue, and green sub-pixels in the direction perpendicular to the predetermined direction.

  Another example of the configuration example is a display device that displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of a plurality of viewpoint pixels are arranged in the horizontal and vertical directions. The image control unit controls the image display unit. At least one red sub-pixel, blue sub-pixel, and two green sub-pixels are arranged in the stereoscopic pixel, and a first sub-pixel is disposed between the red sub-pixel and the blue sub-pixel. Are disposed, and a second green pixel is disposed at a position outside the red sub-pixel and the blue sub-pixel. Further, the combined size of the first green sub-pixel and the second green sub-pixel is the same as the size of the red or blue sub-pixel.

  Another example of the configuration example is a display device that displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels are arranged in a horizontal direction and a vertical direction. The image control unit controls the image display unit. A plurality of the stereoscopic pixels are arranged in a horizontal direction and a vertical direction, and a plurality of sub-pixels including at least a first basic color and a second basic color sub-pixel for expressing a color are arranged. Area. Then, the image control unit performs control of selectively coloring / not coloring the sub-pixels in the region at predetermined intervals in the horizontal direction and the vertical direction in units of the region. Here, the plurality of regions may be configured to include regions of 4 rows and 4 columns in stereoscopic pixels. Also, the width of the region where the control for selectively coloring / not coloring is performed by the image control unit is equal to or half the width of the region where the control for selectively coloring / not coloring is not performed by the image control unit. May be configured as follows.

  Another example of the configuration example is a display device that displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of a plurality of viewpoint pixels are arranged in the horizontal and vertical directions. The image control unit controls the image display unit. Each of the plurality of viewpoint pixels is configured by a plurality of sub-pixels. Then, in the stereoscopic pixel, at least one red, blue, and green sub-pixel is arranged in a predetermined order in the horizontal direction with the upper left or upper right as a starting point, and also at least one red, blue, and green in the vertical direction. Are arranged in the same order as the predetermined order.

  Another example of the configuration example is a display device that displays a stereoscopic image composed of a right-eye image and a left-eye image, and includes an image display unit and an image control unit. In the image display unit, a plurality of stereoscopic pixels composed of right-eye pixels and left-eye pixels are arranged in the horizontal and vertical directions. The image control unit controls the image display unit. At least one red, blue, and green sub-pixel is arranged in the vertical direction in each of the right-eye pixel and the left-eye pixel. Further, a region of a predetermined width is provided between the sub-pixel of the right-eye pixel and the sub-pixel of the left-eye pixel arranged in the vertical direction, and the region of the predetermined width further includes at least one region. One of the red, blue and green sub-pixels is arranged. In addition, the image control unit may perform control for coloring / not coloring the sub-pixels provided in the region of the predetermined width. Further, the number of sub-pixels provided in the region having a predetermined width may be smaller than the number of at least one red, blue, and green sub-pixel arranged in the vertical direction.

  According to the present embodiment, in a display device capable of visually recognizing a stereoscopic image even when the screen is changed from a predetermined posture, it is possible to maintain good color display quality before and after the change.

FIG. 1 is a schematic diagram illustrating an example of a display device 100 according to an embodiment. Schematic diagram showing the concept of control of image separation unit 30 1 is a block diagram illustrating an example of a display device 100 according to an embodiment. The figure which shows the arrangement pattern 1 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 1 Schematic diagram showing control in a horizontal screen using arrangement pattern 1 Diagram for explaining the effect of the present embodiment Diagram for explaining the effect of the present embodiment Diagram for explaining the concept when color development control targets are captured in units of areas The figure which shows the arrangement pattern 2 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 2 Schematic diagram showing control in a horizontal screen using arrangement pattern 2 The figure which shows the arrangement pattern 3 of the subpixel in a stereoscopic vision pixel Schematic diagram showing an example of a liquid crystal screen using arrangement pattern 3 Schematic diagram showing control on a vertical screen using arrangement pattern 3 Schematic diagram showing control in a horizontal screen using arrangement pattern 3 The figure which shows the arrangement pattern 4 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 4 Schematic diagram showing control at the time of a horizontal screen using arrangement pattern 4 The figure which shows the arrangement pattern 5 of the sub-pixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 5 Schematic diagram showing control in a horizontal screen using arrangement pattern 5 Diagram showing another example of the arrangement pattern The figure which shows the arrangement pattern 6 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 6 Schematic diagram showing control in a horizontal screen using arrangement pattern 6 The figure which shows the arrangement pattern 7 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 7 Schematic diagram showing control in the horizontal screen using the arrangement pattern 7 The figure which shows the arrangement pattern 8 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 8 Schematic diagram showing control in a horizontal screen using an arrangement pattern 8 The figure which shows the arrangement pattern 9 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using arrangement pattern 9 Schematic diagram showing control in the horizontal screen using the arrangement pattern 9 The figure which shows the arrangement pattern 10 of the subpixel in a stereoscopic vision pixel Schematic diagram showing control on a vertical screen using the arrangement pattern 10 Schematic diagram showing control in a horizontal screen using the arrangement pattern 10 Diagram showing an example of the shape of a sub-pixel The figure which shows the example of the pattern which reversed the arrangement pattern 1 to right and left. Diagram showing another example of the arrangement pattern Diagram showing an example of the configuration of a parallax barrier Diagram showing an example of parallax barrier control Diagram showing an example of parallax barrier control

  Hereinafter, an embodiment of the present invention will be described.

  A stereoscopic image display device (hereinafter, simply referred to as a display device) according to the present embodiment displays a stereoscopic image including a plurality of viewpoint images corresponding to a plurality of viewpoints. The display device includes an image display unit having a plurality of viewpoint pixels (pixels) arranged in a horizontal direction and a vertical direction, and an image control unit that controls the image display unit. Each of the plurality of viewpoint pixels is constituted by sub-pixels (sub-pixels) arranged in a pattern as described later. The image control unit uses a plurality of stereoscopic pixels as a unit of a “stereoscopic pixel (stereoscopic pixel)” constituted by a plurality of horizontally adjacent viewpoint pixels to convert a plurality of viewpoint images in the horizontal direction. The image display unit is controlled so as to be sequentially displayed according to.

  The display device is a plasma display, an organic EL display, a MEMS display, a liquid crystal display, or the like. In the present embodiment, a case where the display device is a liquid crystal display will be described as an example.

  In addition, since it is assumed that the display device is provided in a hand-held terminal such as a mobile phone or a smartphone, the terms "horizontal direction" and "vertical direction" used in this specification are defined as: Depending on how the handheld device is used, it does not indicate the horizontal or vertical direction in a strict sense. For example, the “horizontal direction” used in the present specification means a direction in which a line connecting the left eye and the right eye of the observer extends. For example, “vertical direction” as used herein means a direction perpendicular to “horizontal direction”.

  Further, in the case of a hand-held terminal, there may be a case where the screen (display device itself) is rotated 90 degrees to the right or left to visually recognize the orientation of the screen. In the present embodiment, when the observer visually recognizes the screen, a horizontally long screen (so-called landscape display) in which the longitudinal direction of the screen matches (or substantially matches) the horizontal direction is called a “horizontal screen”. . A vertically long screen (so-called portrait display) in which the longitudinal direction of the screen matches (or substantially matches) the vertical direction is called a “vertical screen”. In the present embodiment, a case where the display device is used in a “vertical screen” state is a standard state. That is, normally, it is assumed that the observer visually recognizes the display device on a “vertical screen”, and uses the display device by holding or rearranging the display device so as to have a “horizontal screen” as necessary. In the following, unless otherwise specified, the description will be made (as a reference) assuming a state of a “vertical screen”. The drawings used in the following description include drawings using the concept of “x-axis direction” and “y-axis direction”. Unless otherwise specified, "x-axis direction" corresponds to the horizontal direction when the display device is in the "vertical screen", and "y-axis direction" indicates the vertical direction when the display device is in the "vertical screen". The description will be made assuming that it corresponds to the direction.

  In the present embodiment, the stereoscopic image is configured by a left-eye viewpoint image and a right-eye viewpoint image. In the case of the “vertical screen”, pixels forming the left-eye viewpoint image and pixels forming the right-eye viewpoint image are displayed alternately in the horizontal direction. On the other hand, in the case of the “horizontal screen”, the orientation of the display device is alternately displayed in the vertical direction in the state of the “vertical screen” (the observer visually recognizes the stereoscopic image while rotating the display device itself by 90 degrees). Will be). In another embodiment, images of three or more viewpoints may be used so that a plurality of observers can visually recognize a stereoscopic image from different viewpoints. Regarding the number of viewpoints, for example, there are two observers, and there is also known a technology in which a three-dimensional image can be visually recognized at the same time. However, it is assumed that there are at least four viewpoints (right-eye viewpoint, The number of viewpoints of the left eye is two, which is counted as a total of four viewpoints.

(First embodiment)
Hereinafter, the display device according to the first embodiment will be described with reference to the drawings. FIG. 1 is a schematic diagram illustrating a display device 100 according to the first embodiment.

  As shown in FIG. 1, the display device 100 includes an image display unit 10 and an image separation unit 30.

  The image display unit 10 includes a plurality of viewpoint pixels (hereinafter, simply referred to as pixels). Each pixel is constituted by red, blue, and green sub-pixels. Further, a backlight (not shown) for irradiating light from the back side to the plurality of sub-pixels is also provided inside the image display unit 10.

  The image separation unit 30 includes image light emitted from pixels (pixels L in the image display unit 10) forming a left-eye viewpoint image (left-eye image) and pixels forming a right-eye viewpoint image (right-eye image). (The pixel R in the image display unit 10) is separated from the image light emitted from the pixel R. The image separation unit 30 is a parallax barrier, a lenticular lens, or the like. In the present embodiment, a case where the image separation unit 30 is a parallax barrier will be exemplified. In the present embodiment, the image separation unit 30 includes a parallax barrier for “vertical screen” (a parallax barrier extending in the vertical direction when viewed in the “vertical screen”) and a parallax barrier for “horizontal screen”. Parallax barrier (a parallax barrier that extends in the horizontal direction when viewed in the state of a “vertical screen”), and switches appropriately depending on whether the screen is a “horizontal screen” or a “vertical screen” Control shall be performed. FIG. 2 is a schematic diagram illustrating the concept of control of the image separation unit 30 in the present embodiment. In the example of FIG. 2, the vertical screen parallax barrier 30 </ b> A and the horizontal screen parallax barrier 30 </ b> B are arranged on the front side of the image display unit 10 when viewed from the observer's eyes. By default, all parallax barriers are disabled, and one of the parallax barriers is enabled as needed. In other words, control is performed such that the vertical screen parallax barrier 30A is enabled in the vertical screen state, and the horizontal screen parallax barrier 30B is enabled in the horizontal screen state.

  Each of the plurality of sub-pixels constituting each pixel includes a transparent pixel electrode (not shown), a transparent common electrode (not shown), and an RGB color filter. The transparent pixel electrode and the transparent common electrode are arranged to face each other with a liquid crystal (not shown) interposed therebetween. A switching thin film transistor (not shown) is connected to the transparent pixel electrode. By the switching operation of the thin film transistor, an image signal voltage is applied to the transparent pixel electrode, and the sub-pixel is driven. Liquid crystal molecules having optical anisotropy and polarization properties are excited by a potential difference generated between the transparent pixel electrode and the transparent common electrode. There is a difference in transmittance between liquid crystal molecules in each sub-pixel. The plurality of sub-pixels receive light from the backlight and emit light in accordance with each transmittance and the color of each color filter.

  FIG. 3 is a block diagram illustrating the display device 100 according to the first embodiment. As shown in FIG. 3, the display device 100 includes an image display unit 10, an image control unit 50, and a determination unit 60.

  The image display unit 10 includes a plurality of pixels as described above. Specifically, the image display unit 10 has a plurality of pixels arranged in a horizontal direction and a vertical direction.

  Here, one pixel is composed of a plurality of sub-pixels (three sub-pixels of red, green, and blue in this embodiment) (the arrangement of the sub-pixels will be described later). A plurality of horizontally adjacent pixels (here, two pixels) constitute one stereoscopic pixel.

  Of the two pixels constituting the stereoscopic pixel, one of the pixels displays a pixel constituting the left-eye viewpoint image. On the other pixel, the pixels that constitute the right-eye viewpoint image are displayed. That is, the left-eye viewpoint image and the right-eye viewpoint image are sequentially displayed in the horizontal direction with the pixel as one unit.

  In the following, “R” indicates red, “G” indicates green, and “B” indicates blue.

  The image control unit 50 controls the image display unit 10. Specifically, the image control unit 50 uses the plurality of pixels to cause the image display unit 10 to alternately display a plurality of viewpoint images (left-eye viewpoint image and right-eye viewpoint image) along the horizontal direction. Control.

  Further, the image control unit 50 performs control so that only some of the sub-pixels among the sub-pixels constituting the pixel are colored, and the remaining sub-pixels are not colored. As will be described in detail later, with respect to the sub-pixels arranged in the vertical and horizontal directions, control is performed such that the even-numbered sub-pixels are not colored and the odd-numbered sub-pixels are colored. . In addition, control may be performed such that a pixel is divided into a plurality of “regions” and color development / non-color development is performed in units of these regions. In this case, the number of sub-pixels arranged in each area is not limited to one, and a plurality of sub-pixels may be arranged. Then, the sub-pixels included in a certain area may be collectively subjected to color control. That is, when performing the above-described control, the control target may be captured in units of individual “sub-pixels” or in units of regions (which may include a plurality of sub-pixels). In the following description, basically, a case where a control target is captured in units of individual sub-pixels will be described as an example. However, for reference, a description of an example in which “arrangement pattern 1” described below is captured in units of regions will be added.

  In the present embodiment, control is performed so that no color is generated for the “non-colored” sub-pixel in the above control, regardless of what image the display device 100 displays.

  The display device 100 determines whether the screen is in the “horizontal screen” state or the “vertical screen” state (in other words, the posture of the screen or the posture of the display device 100). It also has a part 60. For this determination method, a known method may be used. For example, the display device 100 is configured to include an acceleration sensor, and the posture of the display device 100 is calculated based on the detection result of the acceleration sensor, and whether the display device 100 is in the “horizontal screen” state or the “vertical screen” state is determined. It is conceivable to determine. The determination unit 60 outputs the determination result to the image control unit 50. The image control unit 50 performs control on sub-pixels, which will be described later, based on the determination result from the determination unit (that is, whether the screen is a “horizontal screen” or a “vertical screen”). Further, the image control unit 50 also performs switching control of enabling / disabling the parallax barrier for the horizontal screen and the parallax barrier for the vertical screen based on the determination result. In the present embodiment, the image control unit 50 switches between the two display control modes according to the output result from the determination unit, and controls the image display unit 10 according to this mode. Specifically, when the output from the determination unit 60 indicates “horizontal screen”, the image control unit 50 sets “horizontal display mode” as the display control mode. On the other hand, when indicating that the screen is a “vertical screen”, “vertical display mode” is set as the display control mode. Then, the image control unit forms a parallax barrier according to the display control mode. That is, in the case of the “horizontal display mode”, control is performed to disable the vertical screen parallax barrier, and in the case of the “vertical display mode”, control is performed to disable the horizontal screen parallax barrier. Perform

  In another embodiment, the above-described “horizontal display mode” and “vertical display mode” may be switched by, for example, performing a predetermined operation by an observer without using the determination unit 60. For example, it is possible to switch between “horizontal display mode” and “vertical display mode” according to the operation of the observer by a slide switch for switching between both modes, a screen direction setting operation on a predetermined setting screen, and the like. You may comprise.

  Next, the arrangement of sub-pixels in the stereoscopic pixel according to the first embodiment will be described. In the present embodiment, the sub-pixels of the three primary colors of RGB are arranged in an arrangement pattern as described below. Hereinafter, seven arrangement patterns will be exemplified. By performing these arrangement patterns and color development control as described below, in the present embodiment, whether the screen is viewed on the “vertical screen” or the “horizontal screen”, the right eye and the left eye The amount of each of red, green, and blue incident light can be made uniform. In other words, the sub-pixels are arranged so that the ratio (ratio) of red, green, and blue per pixel is constant regardless of whether the screen is viewed vertically or horizontally. is there. In addition, even when the observer is not at an ideal position for viewing stereoscopic vision, a stereoscopic image can be visually recognized.

(Arrangement pattern 1)
FIG. 4 is a diagram illustrating an example of an arrangement of sub-pixels in the stereoscopic pixel 120 according to the first embodiment. Hereinafter, the arrangement pattern illustrated in FIG. 4 is referred to as “arrangement pattern 1”. Also, this figure shows a case where the screen is a “vertical screen”.

  The stereoscopic pixel 120 illustrated in FIG. 4 includes the two pixels 121 and 122 that are adjacent in the horizontal direction as described above. In FIG. 4, it is assumed that the pixel 121 is a right-eye pixel and the pixel 122 is a left-eye pixel. Since this figure shows the case of the “vertical screen” as described above, in the case of the “horizontal screen”, the assignment of the right-eye pixel and the left-eye pixel is also changed as appropriate by rotating 90 degrees. Will be.

  In the example of FIG. 4, each of the right-eye pixel 121 and the left-eye pixel 122 includes six sub-pixels, and the total number of sub-pixels included in the stereoscopic pixel 120 is twelve. In each of the right-eye pixel 121 and the left-eye pixel 122, the sub-pixels are arranged in two columns in the vertical direction (y-axis direction) and four rows in the horizontal direction (x-axis direction). When viewed as one stereoscopic pixel 120, it is arranged over 4 rows and 4 columns. That is, the stereoscopic pixel 120 has a configuration in which at least four sub-pixels can be arranged in each row and each column. In each pixel, the number of G sub-pixels is larger than the number of R or B sub-pixels.

  In the following description, “row” corresponds to the arrangement (array) of the screen in the “vertical screen” state in the x-axis direction (lateral direction), and “column” corresponds to the y-axis direction (vertical direction). Explanation will be made as corresponding.

  In FIG. 4, in the right-eye pixel 121, first, in the left column (the first column when the entire stereoscopic pixel 120 is viewed), R, G, B, and B are arranged along the vertical direction (y-axis direction). Four sub-pixels are arranged in the order of G. In the right column (the second column when the entire stereoscopic pixel 120 is viewed), one G sub-pixel is arranged at a position adjacent to the R or B sub-pixel. In other words, the G sub-pixels are arranged so as to sandwich the G sub-pixel between the R sub-pixel and the B sub-pixel, and the G sub-pixels are not adjacent to each other. Further, a position between the G sub-pixel and the G sub-pixel is a non-arranged area 126 where no sub-pixel is arranged (an area indicated by a dotted rectangle in FIG. 4). The position of the fourth row in the column is also the unarranged area 126.

  On the other hand, in the left-eye pixel 122, four sub-pixels are arranged in the vertical direction in the order of B, G, R, and G in the left column (the third column when the entire stereoscopic pixel 120 is viewed). ing. That is, the order of R and B in the left column of the right-eye pixels 121 is reversed. Similarly to the right-eye pixel 121, the right column of the left-eye pixel 122 (the fourth column when the entire stereoscopic pixel 120 is viewed) is located at a position adjacent to the R or B sub-pixel. G sub-pixels are arranged one by one. Further, a position between the G sub-pixels is an unarranged area 126. The position of the fourth row in the column is also the unarranged area 126.

  When viewed from the entire right-eye pixel 121 or the entire left-eye pixel 122, the first G sub-pixel (the G sub-pixel in the left column) is located between the R sub-pixel and the B sub-pixel. It can also be said that the second G pixel (corresponding to the sub-pixel in the right column) is arranged outside the R sub-pixel or the B sub-pixel. Also, when viewed from the entire stereoscopic pixel 120 (and, consequently, the entire image composed of a group of a plurality of stereoscopic pixels 120), the second G pixel arranged outside the R sub-pixel or the B sub-pixel is viewed. The sub-pixel will be disposed between the R sub-pixel and the B sub-pixel.

  Further, when viewed as a whole of the stereoscopic pixels 120, the arrangement order of RGB in the first row and the arrangement order of RGB in the first column are the same, that is, arranged in the order of R, G, B, and G. ing. In other words, the sub-pixels are arranged so as to be arranged in the order of R, G, B, and G (that is, the same order) in both the vertical and horizontal directions, with the sub-pixel located at the upper left of the stereoscopic pixel 120 as the starting point. ing. As for the breakdown of the number of sub-pixels, as described above, the number of G sub-pixels is larger than the number of R or B sub-pixels. Specifically, the configuration is such that there are two Rs, two Bs, and four Gs.

  The right-eye pixel and the left-eye pixel each include at least one or more red, blue, and green sub-pixels.

  When the entire stereoscopic pixel 120 is viewed, the first and third columns include at least one sub-pixel of all colors of R, G, and B, but the second and fourth columns The eye has a configuration in which only the G sub-pixel is arranged. Further, when viewed in rows, the first and third rows include at least one subpixel of all colors of R, G, and B, and the second and fourth rows include subpixels of G. The configuration is such that only pixels are arranged. Note that the sub-pixels in the even-numbered columns / rows are subjected to control for coloring / non-coloring as described later. In other words, the configuration is such that the sub-pixels of a color that is not subjected to the control to be colored or not to be described later are not arranged in the even-numbered columns / rows.

  Here, the width of the sub-pixel will be described. In the arrangement pattern 1, in each of the vertical screen and the horizontal screen state, the ratio of the horizontal width of the R and B sub pixels to the horizontal width of the G sub pixel in the horizontal direction viewed from the observer is 2 : 1. The ratio of the width is not limited to this ratio. For example, the arrangement may be such that the ratio of the width of the R and B sub-pixels to the width of the G sub-pixel is 1: 1 (for example, arrangement pattern 2 described later). Of course, other ratios may be used. Furthermore, the ratio of the horizontal width of the sub-pixel in the horizontal direction viewed from the viewer may be different between the vertical screen state and the horizontal screen state (for example, an arrangement pattern 5 described later).

  Next, the area (size) of each sub-pixel will be described. In the arrangement pattern 1, the R sub-pixel and the B sub-pixel have the same area. The area of the G sub-pixel is half the area of the R or B sub-pixel. In the example of FIG. 4, the R and B sub-pixels are squares having sides of length p. On the other hand, the G sub-pixel has a rectangular shape, and its long side has a length p and its short side is half (p / 2) of the length p (G The sub-pixels are arranged such that the short side thereof is along the x-axis (horizontal direction) in the state of the horizontal screen.) Therefore, the area of the G sub-pixel is half that of the R or B sub-pixel. In other words, the area of two G sub-pixels in one pixel is the same as the area of the R or B sub-pixel. The number of G sub-pixels is twice the total number of R and B sub-pixels. Therefore, the area occupied by each of the R, G, and B sub-pixels in one pixel is the same. The unarranged area 126 in the arrangement pattern 1 has an area of 1/4 of the R or B sub-pixel.

  In addition, the arrangement of the sub-pixels according to the arrangement pattern 1 is such that the color of a certain sub-pixel is the same as the color of the sub-pixel at a position substantially symmetrical with respect to a diagonal line extending from the upper left to the lower right of the stereoscopic pixel 120. It is arranged so that it may become a color.

  Next, control of the stereoscopic pixel 120 in which the sub-pixels are arranged as described above will be described. The image control unit 50 causes or does not cause any of the G sub-pixels in each pixel to be colored according to whether the screen is a “vertical screen” or a “horizontal screen” (the determination result of the determination unit 60). Is performed. Specifically, when the screen is a “vertical screen”, control is performed such that the sub-pixels are not colored at every second interval in the horizontal direction but are colored at every second interval in the vertical direction. . When the screen is a "horizontal screen", control is performed such that the sub-pixels are not colored at the second intervals in the vertical direction, but are colored at the first intervals in the horizontal direction. .

  More specifically, in the stereoscopic pixel 120, sub-pixels in even-numbered rows or columns (corresponding to the first and second intervals) starting from the upper left sub-pixel are defined as a vertical screen. The control is performed such that the color is selectively formed / not formed according to whether the screen is a horizontal screen. In other words, in the arrangement order of the sub-pixels, control is performed such that the even-numbered sub-pixels are selectively colored / not colored. In the example of the present embodiment, in the case of the “horizontal screen” or the “vertical screen”, when viewed from the observer's eyes, the columns of the sub-pixels arranged in the vertical direction (“column” by the observer's eyes, In other words, the control is performed so that the sub-pixels in the column in which the R and B sub-pixels do not exist are arranged along the longitudinal direction of the parallax barrier used in the screen state). .

  The control will be described with reference to FIGS. FIG. 5 is a diagram illustrating a color development state of the stereoscopic pixels 120 when the image control unit 50 operates in the “vertical display mode”. In this figure, it is shown that the sub-pixel located on the upper left of the stereoscopic pixel 120 is not used as a starting point to color the G sub-pixels located in the second and fourth columns (black painted sub-pixels). Indicates that no color was formed. The same applies hereinafter.) This can be said to be a control in which the sub-pixels of the even-numbered columns are not colored. That is, the R, G, B, and G sub-pixels in the first column of the stereoscopic pixel 120 and the B, G, R, and G sub-pixels in the third column (corresponding to the first column of the left-eye pixel 122) Only the color is being developed. In other words, the control is such that the G sub-pixels arranged at even-numbered positions counted from the left end of the stereoscopic pixel 120 are not colored. As described above, by preventing the even-numbered columns from being colored, a region having no color in the stereoscopically viewed pixels 120 is generated. This makes it possible for the observer to visually recognize the stereoscopic image even when the observer is not at an ideal position for viewing the stereoscopic vision.

  On the other hand, when the image control unit 50 operates in the “horizontal display mode”, the color development state is as shown in FIG. Since the screen is in a “horizontal screen” state, when the image is actually viewed from the observer's eyes, the screen as shown in FIG. 6 is viewed by rotating the screen 90 degrees to the right or left. In the coloring control shown in FIG. 6, compared to the case of FIG. 5, only the first and third sub-pixels, which are the rows including the R and B sub-pixels, are colored. The second pixel, the fourth line, that is, the sub-pixels (the G sub-pixels in FIG. 6) in the even-numbered rows from the top are controlled not to color. In other words, in the stereoscopic pixel 120, the control is such that the G sub-pixels arranged at even-numbered positions counted from the top are not colored.

  In FIG. 4, the R sub-pixel and the B sub-pixel in the first column are included in the right-eye pixel 121 in the vertical screen state. Therefore, in the vertical screen state, these sub-pixels are controlled as right-eye pixels. Here, consider a case where the screen is rotated 90 degrees to the left (assuming a case where the screen is rotated 90 degrees to the left in FIG. 6). In this case, the R sub-pixel is included in the right-eye pixel 121 as in the case of the vertical screen state, but the B sub-pixel is included in the left-eye pixel. Therefore, the B sub-pixel is controlled as a left-eye pixel in the horizontal screen state (when rotated 90 degrees to the left). In other words, the color control of the B sub-pixel in the horizontal screen state (when rotated 90 degrees to the left) is the same as the color control of the B sub-pixel in the third column in the vertical screen state. Next, consider the case where the screen is rotated 90 degrees to the right from the vertical screen state (FIG. 6 is rotated 90 degrees to the right). In this case, contrary to the case of the left rotation, the relationship is such that the R sub-pixel is included in the left-eye pixel and the B sub-pixel remains the right-eye pixel. Therefore, in the horizontal screen state (when rotated 90 degrees to the right), the R sub-pixel is controlled as the left-eye pixel. In other words, the color control of the R sub-pixel in the horizontal screen state (when rotated 90 degrees to the right) is the same as the color control of the R sub-pixel in the third column in the vertical screen state.

  That is, when the screen is rotated to the left by 90 degrees from the vertical screen state to the horizontal screen state, the sub-pixel of B switches its role as the pixel for the right eye and the role for the pixel for the left eye, The sub-pixel does not change its role before and after rotation. On the other hand, when the screen is rotated to the right by 90 degrees from the vertical screen state to the horizontal screen state, the role of the R sub-pixel is switched between the role of the right-eye pixel and the role of the left-eye pixel, but The sub-pixels have a corresponding relationship that their roles do not change before and after rotation.

  As described above, the image control unit 50 sets the sub-pixel positioned at the upper left of the stereoscopic pixel 120 as a starting point to set the even-numbered column or row of sub-pixels in the arrangement order in the horizontal display mode or the vertical display mode. Is controlled to selectively develop or not develop a color depending on whether the color is a color. In addition, referring to the examples of FIGS. 5 and 6, in the vertical display mode, control is performed so that at least one of the G sub-pixels is not colored, and in the horizontal display mode, at least one other G sub-pixel is not colored. You can say it. In other words, the G sub-pixels that are not to be colored (colored) are different between the vertical display mode and the horizontal display mode. In addition, as a result of the above arrangement, while such control for selectively coloring / non-coloring is performed, at least in each of the vertical display mode and the horizontal display mode, each of the RGB sub-pixels is One is in a state where color is developed.

  As described above, in the arrangement pattern 1, the sub-pixels included in the stereoscopic pixels 120 are arranged as shown in FIG. This makes it possible to increase or decrease the amount of RGB incident on both eyes of the observer when the view position of the observer changes, regardless of whether the screen is set to “vertical screen” or “horizontal screen”. Can be done. For example, assume a case where the positions of both eyes of the observer slightly shift to the left from a position appropriate for the stereoscopic display. In this case, when the display is the “vertical screen”, the parallax barrier 30 </ b> A for the vertical screen partially overlaps the left ends of the sub-pixels in the first and third columns as shown in FIG. It becomes such a state. In the case of the “horizontal screen”, as shown in FIG. 8 (in this figure, the screen is rotated 90 degrees to the left), the parallax barrier 30B for the horizontal screen in FIG. A state in which it partially overlaps the left end of the first and third sub-pixels along the x-axis direction (when considered as a vertical screen, it overlaps the upper end of the first and third rows) . In either case, the reduction of RGB is reduced at an even rate. In addition, for example, in FIG. 5, there is an area in the second and fourth columns in which the G sub-pixels are arranged, so that the observer is not at an ideal position for viewing stereoscopic vision. However, a stereoscopic image can be visually recognized clearly. In other words, even if the observer's position slightly deviates from such an ideal position, for example, when viewing the image for the left eye, the image for the right eye is prevented from being incident on the left eye. Can be. As a result, the observer does not visually recognize the image related to the adjacent pixel, so that even in such a case, a clear stereoscopic vision can be visually recognized. Further, by arranging G pixels in the above-mentioned area (for example, the second column and the fourth column) for making it possible to clearly view stereoscopic vision even when not at the ideal position, The area of the viewing pixel 120 can also be used effectively.

  Note that, in the above description, an example has been described in which the target of color development control is captured in sub-pixel units. Here, a case will be described in which the above-described arrangement pattern 1 is applied by capturing the color control target in units of “regions” as described above. FIG. 9 is a diagram showing the concept of the arrangement pattern 1 in the case where the target of color development control is considered in units of regions. In FIG. 9, the stereoscopic pixel 120 is divided into 4 × 4 areas. The size ratio of each region and the layout are in accordance with the above-described layout pattern 1. That is, the area A1 and the area C3 in FIG. 9 correspond to the R sub-pixel in FIG. 4, and the area A3 and the area C1 correspond to the B sub-pixel in FIG. In addition, the area A2, the area A4, the area B1, the area B3, the area C2, the area C4, the area D1, and the area D3 have a relationship corresponding to the G sub-pixel in FIG. Further, the area B2, the area B4, the area D2, and the area D4 have a relationship corresponding to the non-arranged area 126 in FIG. 4 (that is, no sub-pixel is arranged in these areas). The number of sub-pixels arranged in each region is not limited to one, and may include a plurality of sub-pixels. Further, the colors of the sub-pixels arranged in each area also conform to the above-described arrangement pattern 1. For example, in the region A1 and the region C3, only a plurality of R sub-pixels are arranged. In the case of the “horizontal display mode”, control is performed so that the sub-pixels arranged in each of the areas B1, B3, D1, and D3 in FIG. 9 are not colored. In the case of the "vertical display mode", control is performed so that the sub-pixels disposed in each of the area A2, the area C2, the area A4, and the area C4 are not colored. As described above, the same effects as those described above can be obtained even when the color control of the sub-pixels is performed in units of regions. In the above example, the case where the colors of the sub-pixels included in each area are the same color (one color) is described as an example. In another embodiment, the configuration may be such that the colors of the sub-pixels included in each area are two or more. That is, a configuration in which a certain region includes sub-pixels of a plurality of colors may be employed.

  In the arrangement pattern 1, the vertical and horizontal sides of the R and B sub-pixels have the same length (ie, square), and the vertical and horizontal sides of the G sub-pixel have the same length. (Having a long side and a short side). The length of this side is not limited to this example, and may be any length.

(Arrangement pattern 2)
Next, another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern illustrated in FIG. 10 is referred to as “arrangement pattern 2”. This figure also shows a case where the screen is a “vertical screen”.

  In the arrangement pattern of FIG. 10, the total number of sub-pixels included in the stereoscopic pixel 120 is eight. That is, it can be said that the total number of sub-pixels per one stereoscopic pixel is smaller than that in the arrangement pattern 1. The number of R and B pixels is two and the number of G pixels is four. When the entire stereoscopic pixel 120 is viewed, the number of G sub-pixels is larger than the number of R or B sub-pixels.

  In the right-eye pixel 121 in FIG. 10, in the left column (the first column of the stereoscopic pixels 120), sub-pixels are arranged vertically one by one in the order of R, G, and B. Below the B sub-pixel is a non-arranged area 126. In the right column (the second column of the stereoscopic pixels 120), one G subpixel is arranged at a position adjacent to the R or B subpixel. A position below each G sub-pixel (a position not adjacent to the R or B sub-pixel) is a non-arranged area 126.

  On the other hand, in the left-eye pixel 122, in the left column (the third column of the stereoscopic pixels 120), sub-pixels are arranged in the vertical direction one by one in the order of B, G, and R. That is, they are arranged in a different order from the sub-pixels in the left column of the right-eye pixels 121 (in the reverse order in this example). An unarranged area 126 is provided below the R sub-pixel. In addition, the right column (the fourth column of the stereoscopic pixels 120) is an unarranged area 126.

  When the sub-pixel located at the upper left of the stereoscopic pixel 120 (the position in the first column and the first row) is viewed as a starting point, the sub-pixels are arranged in the order of R, G, and B in the rightward and downward directions, respectively ( (Same order). In other words, starting from the sub-pixel located at the upper left of the stereoscopic pixel, the R, G, and B sub-pixels are arranged in the same order in the horizontal and vertical directions.

  In addition, when viewed as the entire stereoscopic pixel 120, it can be said that eight sub-pixels are arranged in a ring. Then, the eight sub-pixels having such an arrangement are arranged closer to the upper left of the stereoscopic pixel 120. Further, similarly to the arrangement pattern 1, the color of a certain sub-pixel is the same as the color of the sub-pixel that is substantially symmetrical with respect to the diagonal line extending from the upper left to the lower right of the stereoscopic pixel 120. It is also such an arrangement.

  In the arrangement pattern 2, the vertical side and the horizontal side of each of the sub-pixels arranged in the stereoscopic pixel 120 have the same length p (that is, they are square), and their areas are also the same. ing. In other words, in the arrangement pattern 2, in each of the vertical screen and the horizontal screen state, the horizontal width of the sub-pixel in the horizontal direction viewed from the observer is the width of the R and B sub-pixels and the width of the G sub-pixel. Is 1: 1.

  The control of the stereoscopic pixels 120 using the arrangement pattern 2 is basically the same as that of the arrangement pattern 1 described above. That is, starting from the sub-pixel located at the upper left of the stereoscopic pixel 120, the even-numbered sub-pixel in the arrangement order (in FIG. 10, any G sub-pixel) is set to the horizontal display mode or the vertical display mode. Control is performed such that color is selectively made or not made according to the display mode.

  11 to 12 show examples of control of the stereoscopic pixels 120 in the case of the arrangement pattern 2. FIG. FIG. 11 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 12 shows a color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, sub-pixels arranged in even-numbered order from the left in order of arrangement (sub-pixels arranged in even-numbered columns), starting from the sub-pixel located at the upper left of the stereoscopic pixel 120 Is controlled so that no color is developed. FIG. 11 shows that the sub-pixels in the second column from the left are not colored. On the other hand, in the “horizontal display mode” illustrated in FIG. 12, the sub-pixel positioned at the upper left of the stereoscopic pixel 120 is set as a starting point, and the sub-pixels arranged at the even-numbered from the top in the arrangement order (arranged in the even-numbered row The sub-pixel is controlled so as not to color. FIG. 12 shows that the sub-pixels in the second row from the top are not colored. That is, similarly to the case of the arrangement pattern 1, the image control unit 50 determines whether the even-numbered sub-pixel in the arrangement order is set to the vertical display mode, with the sub-pixel located at the upper left of the stereoscopic pixel 120 as the start point. Control is performed such that the color is selectively displayed or not depending on whether the display mode is the horizontal display mode.

  In addition, in the arrangement pattern 2, it can be said that the length (width) of each side of the sub-pixel to be colored and the sub-pixel not to be colored is the same.

  When the control using the arrangement pattern 2 is performed, the same effect as that of the arrangement pattern 1 can be obtained.

  Note that, when the arrangement pattern 2 is viewed from the entire stereoscopic pixel 120, as shown in FIG. 10, there is an unarranged area 126 at the center, and a set of eight sub-pixels arranged annularly around the area 126. Are arranged in such a manner as to be shifted to the upper left of the stereoscopic pixel 120. In another embodiment, the arrangement position of the set of sub-pixels may be arranged to be closer to the upper right of the stereoscopic pixel 120, or may be arranged to be closer to the lower left or lower right. . In this case, the columns or rows to be controlled to be colored / not colored are also changed. That is, when attention is paid to the eight sub-pixels arranged in a ring, the row or column to be controlled is appropriately changed so that the same control as that shown in FIGS. 11 and 12 is performed. do it.

(Arrangement pattern 3)
Next, another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern shown in FIG. 13 is referred to as “arrangement pattern 3”. This figure also shows a case where the screen is a “vertical screen”.

  In the arrangement pattern of FIG. 13, the total number of sub-pixels included in the stereoscopic pixels 120 is eight. The number of R and B pixels is two and the number of G pixels is four. That is, as in the arrangement patterns 1 and 2, a larger number of G sub-pixels are arranged than the number of R or B sub-pixels.

  In the right-eye pixel 121 in FIG. 13, the sub-pixels are arranged in the left column one by one in the order of R, G, and B in the vertical direction. Below the B sub-pixel is a non-arranged area 126. In the right column, one G sub-pixel is arranged at a position adjacent to the R sub-pixel. The entire area below the G sub-pixel is an unarranged area 126.

  On the other hand, in the left-eye pixel 122, first, in the left column, the B sub-pixel is arranged at the top. Then, the R sub-pixel is arranged downward so as to sandwich the unarranged area 126 for one sub-pixel. Below that, a G sub-pixel is arranged. In the column on the right side of the left-eye pixel 122, a G sub-pixel is arranged at a position adjacent to the R sub-pixel in the left column.

  When the entire stereoscopic pixel 120 of FIG. 13 is viewed, an R sub-pixel is arranged at the upper left position, and the same order (R, G, R, G, (In the order of B). This arrangement is also inverted L-shaped. The three sub-pixels (one R and two G) are also arranged in an inverted L-shape at the lower right position of the stereoscopic pixel 120. Although only one stereoscopic pixel 120 is shown in FIG. 13, an actual liquid crystal screen is configured by arranging such stereoscopic pixels 120 vertically and horizontally. Therefore, when considering a plurality of stereoscopic pixels 120 (that is, the entire screen), an inverted L-shaped sub-pixel group as described above is arranged in an oblique direction so as to sandwich the non-arranged area 126. (See FIG. 14).

  Also, in the arrangement pattern 3, the color of a certain sub-pixel is the same as the color of the sub-pixel at a position substantially symmetrical with respect to a diagonal line extending from the upper left to the lower right of the stereoscopic pixel 120. It is arranged.

  Further, in the arrangement pattern 3, the vertical side and the horizontal side of each of the sub-pixels arranged in the stereoscopic pixel have the same length and the same area. In the arrangement pattern 3, in each of the vertical screen and the horizontal screen state, the horizontal width of the sub-pixel in the horizontal direction viewed from the observer is the ratio of the horizontal width of the R and B sub-pixels to the horizontal width of the G sub-pixel. Is 1: 1.

  The control of the stereoscopic pixels 120 using the arrangement pattern 3 is basically the same as that of the arrangement pattern 1 described above. That is, starting from the sub-pixel located at the upper left of the stereoscopic pixel 120, the even-numbered sub-pixel in the arrangement order (in FIG. 13, any G sub-pixel) is placed in the vertical display mode or the horizontal display mode. Control is performed such that color is selectively made or not made according to the display mode.

  15 and 16 show examples of controlling the stereoscopic pixels 120 in the case of the arrangement pattern 3. FIG. FIG. 15 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 16 shows a color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, an even-numbered sub-pixel in the horizontal direction starts from the sub-pixel located at the upper left of the stereoscopic pixel 120, and in the example of FIG. Control is performed so that the sub-pixel is not colored. On the other hand, in the “horizontal display mode”, the sub-pixel located at the upper left of the stereoscopic pixel 120 is set as the starting point, and the even-numbered sub-pixels in the arrangement order in the arrangement order. In the example of FIG. Control is performed so that the G sub-pixel in the row is not colored.

  In the arrangement pattern 3 as well, it can be said that the length (width) of each side of the sub-pixel to be colored and the sub-pixel not to be colored is the same.

  When the control using the arrangement pattern 3 is performed, the same effect as the arrangement pattern 1 can be obtained. That is, in the case of the “vertical screen” or the “horizontal screen”, the amount of RGB incident on both eyes of the observer when the visual recognition position of the observer changes can be similarly increased or decreased.

(Arrangement pattern 4)
Next, still another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern shown in FIG. 17 is referred to as “arrangement pattern 4”. This figure also shows a case where the screen is a “vertical screen”.

  In the arrangement pattern 4 shown in FIG. 17, the number of sub-pixels included in the stereoscopic pixel 120 is eight in total. The number of R and B pixels is two and the number of G pixels is four. Similarly to the above arrangement patterns, a larger number of G sub-pixels are arranged than the number of R or B sub-pixels.

  In the arrangement pattern 4 shown in FIG. 17, the sub-pixels are arranged in the left column of the right-eye pixel 121 one by one in the order of R, G, and B in the vertical direction. Below the B sub-pixel is a non-arranged area 126. In the right column, one G sub-pixel is arranged at a position adjacent to the R and B sub-pixels. The area under the G sub-pixel is also an unarranged area 126.

  On the other hand, in the pixel 122 for the left eye, in the left column, first, the B sub-pixel is arranged at the top position. Then, the R sub-pixel is arranged below the unarranged area 126 for one sub-pixel. Below that, a G sub-pixel is arranged. The columns on the right side of the left-eye pixels 122 are all non-arranged areas 126.

  In addition, when viewed as a whole of the stereoscopic pixels 120, the arrangement order of the sub-pixels in the third row (in the horizontal direction) is the reverse order (different order) of the arrangement order of the sub-pixels in the first row.

  In the arrangement pattern 4 as well, the vertical and horizontal sides of each of the sub-pixels arranged in the stereoscopic pixel have the same length and the same area. Therefore, even in the arrangement pattern 4, in each of the vertical screen and the horizontal screen state, the horizontal width of the sub-pixel in the horizontal direction viewed from the observer is the ratio of the horizontal width of the R and B sub-pixels to the horizontal width of the G sub-pixel. Is 1: 1.

  The control of the stereoscopic pixels 120 using the arrangement pattern 4 is the same as the above arrangement patterns. That is, starting from the sub-pixel located at the upper left of the stereoscopic pixel 120, the even-numbered sub-pixel in the arrangement order (in FIG. 17, any G sub-pixel) is displayed in the vertical display mode or the horizontal display mode. Control is performed such that color is selectively made or not made according to the display mode.

  18 and 19 show examples of controlling the stereoscopic pixels 120 in the case of the arrangement pattern 4. FIG. FIG. 18 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 19 shows a color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, the sub-pixel located at the upper left of the stereoscopic pixel 120 is set as a start point, and even-numbered sub-pixels in the horizontal direction are controlled. In FIG. 18, the G sub-pixel in the second column from the left is not colored. Is performed. On the other hand, in the “horizontal display mode”, starting from the sub-pixel located at the upper left of the stereoscopic pixel 120, the even-numbered sub-pixel in the vertical direction in the arrangement order, and in FIG. 19, the second and fourth rows from the top Is performed so that the G sub-pixel is not colored.

  In the arrangement pattern 4, the length (width) of each side of the sub-pixel to be colored and the sub-pixel not to be colored is the same.

  When the control using such an arrangement pattern 4 is performed, the same effects as those of the arrangement patterns 1 to 3 can be obtained. That is, in the case of the “vertical screen” or the “horizontal screen”, the amount of RGB incident on both eyes of the observer when the visual recognition position of the observer changes can be similarly increased or decreased.

(Arrangement pattern 5)
Next, still another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern illustrated in FIG. 20 is referred to as “arrangement pattern 5”. This figure also shows a case where the screen is a “vertical screen”.

  In the arrangement pattern 5 of FIG. 20, the number of sub-pixels included in the stereoscopic pixel 120 is 16 in total. Specifically, each of the right-eye pixel 121 and the left-eye pixel 122 has two R and B pixels and four G pixels. Similarly to the above-described arrangement pattern 1 and the like, when the entire stereoscopic pixel 120 is viewed, a larger number of G sub-pixels are arranged than the number of R or B sub-pixels.

  In the arrangement pattern 5, the number of matrices included in the stereoscopic pixels 120 is 6 columns and 4 rows. Each of the right-eye pixels 121 and the left-eye pixels 122 has a configuration of three columns and four rows.

  In the right-eye pixel 121 of FIG. 20, first, the B sub-pixel is arranged in the first column and the first row. An R sub-pixel is arranged in the second column and the first row on the right side. Further, a G sub-pixel is arranged on the third column and the first row on the right side. Next, in the second row, the G sub-pixels are arranged so as to straddle the first and second columns. The position on the right side of the third column and the second row is a non-arranged area 126. Next, looking at the third row, R sub-pixels are arranged in the first column and third row. The B sub-pixel is arranged in the second column and the third row on the right side. Further, a G sub-pixel is arranged in the third column and the third row on the right side. That is, the arrangement is such that the positions of R and B are interchanged from the arrangement of the first row. Next, looking at the fourth row, similarly to the second row, the G sub-pixels are arranged so as to straddle the first and second columns. The position on the third column and the fourth row on the right side is the non-arranged area 126.

  Here, the size, shape, and arrangement direction of each of the R, B, and G sub-pixels will be described. As shown in FIG. 20, the sizes of the R, B, and G sub-pixels are the same, and the shape is a rectangular shape. This rectangle has a shape in which the length of the long side is twice the length of the short side. In the first and third rows, the sub-pixels are arranged so as to be vertically long. On the other hand, in the second and fourth rows, the sub-pixels are arranged to be horizontally long.

  Next, the arrangement of the sub-pixels in the left-eye pixel 122 in FIG. 20 will be described. As shown in FIG. 20, the arrangement is basically the same as that of the pixel 121 for the right eye. However, the arrangement of the R and B sub-pixels on the first and third rows is opposite to that of the right-eye pixel 121.

  Next, control of the stereoscopic pixel 120 using the arrangement pattern 5 will be described. Even in the case of this arrangement pattern, control is performed to selectively cause / disable the (G) sub-pixel to be colored depending on whether the mode is the horizontal display mode or the vertical display mode. However, in this arrangement pattern, since the number of rows and columns does not match, the arrangement order of the sub-pixels to be controlled differs between the column direction (vertical direction) and the row direction (horizontal direction). Become.

  FIGS. 21 to 22 show an example of control of the stereoscopic pixels 120 in the case of the arrangement pattern 5. FIG. FIG. 21 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 22 shows a color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, the sub-pixel located at the upper left of the stereoscopic pixel 120 is set as a starting point, and control is performed so as not to color the third and sixth (G) sub-pixels from the left in the arrangement order. It is. On the other hand, in the “horizontal display mode” illustrated in FIG. 22, the (G) sub-pixels arranged second and fourth from the top in the arrangement order, with the sub-pixel located at the upper left of the stereoscopic pixel 120 as the starting point Is controlled so that no color is developed. That is, the sub-pixels to be subjected to the color control are the sub-pixels arranged every two columns in the “vertical display mode”. On the other hand, in the “horizontal display mode”, the sub-pixels arranged every other row are subjected to the color control. That is, the interval between the sub-pixels to be subjected to the color control is different between the vertical display mode and the horizontal display mode.

  When the control using the arrangement pattern 5 is performed, the same effect as that of the arrangement pattern 1 can be obtained.

  As described above, in the first embodiment, the three primary colors of RGB are arranged in the above-described pattern in the stereoscopic pixel 120, and the above-described color generation control is performed. That is, for one of the RGB colors, a larger number of sub-pixels than the number of sub-pixels of the other colors are arranged so as to be even-numbered in the arrangement order (the specific arrangement pattern is described above). There is such an example). Then, the coloring is controlled selectively for the even-numbered sub-pixels. In the above example, the target of the selective color control is the G sub-pixel, and the R and B sub-pixels are to be colored both in the “vertical screen” and in the “horizontal screen”. Become. Thereby, the amount of RGB incident on both eyes of the observer can be similarly increased or decreased in the case of the vertical screen and the case of the horizontal screen.

  In each of the above arrangement patterns, an area having a predetermined width is provided between the vertically arranged sub-pixels for the right eye and the vertically arranged sub-pixels for the left eye, and the area is colored / not colored. It can be said that the configuration is such that sub-pixels to be controlled are arranged. By providing a region having a predetermined width between the sub-pixels as described above, a stereoscopic image can be clearly viewed by a viewer, and the region can be effectively used.

  In another embodiment, the sub-pixels that are arranged in an even-numbered order in the arrangement order and that are subjected to the selective color development control may be R or B sub-pixels. This means that the sub-pixel to be subjected to the selective coloring control is any one of R, G, and B colors. Regardless of which color is controlled, the same effect as described above can be obtained.

  In another embodiment, the arrangement order of the RGB sub-pixels is not limited to the arrangement pattern shown above, but may be any order. For example, in the above arrangement pattern 1, the sub-pixels are arranged in the vertical direction from the upper left of the stereoscopic pixel 120 in the order of RGBG. The arrangement is not limited to this, and they may be arranged, for example, in the order of BGRG (in this case, the arrangement order in the third column is vertically aligned with RGBG). Furthermore, similarly in the example of the arrangement pattern 1, the number of sub-pixels is two for R, two for B, and eight for G. The configuration is not limited to this, and a configuration of eight Rs, two Bs, and two Gs may be employed (that is, a configuration in which R and G in the arrangement pattern 1 are exchanged). That is, the arrangement order of the RGB sub-pixels may be arbitrary. Further, the sub-pixels that are controlled to generate or not to develop colors may be of any color.

  Further, in the above example, only one color is targeted for the sub-pixel to be subjected to the selective color generation control (the G sub-pixel in the above example). The sub-pixels to be subjected to the color control may be two colors. For example, an arrangement pattern as shown in FIG. 23 may be used. This figure shows an example in which two color sub-pixels, that is, an R sub-pixel and a G sub-pixel, are subjected to selective coloring control based on the arrangement pattern 1 described above. That is, in this example, one R pixel and one G sub pixel are arranged in each of the even columns and the even rows. With respect to the odd columns / odd rows, for example, the first column is arranged in the order of RGBG as in the arrangement pattern 1. On the other hand, the third column is arranged in the order of BRGR, unlike the arrangement pattern 1. That is, the arrangement is such that R and G in the third column of the arrangement pattern 1 are interchanged. Even when the above-described selective coloring control is performed in such an arrangement pattern, the same effect as described above can be obtained.

(Second embodiment)
Next, a second embodiment will be described. In the above-described first embodiment, an example in which sub-pixels of three primary colors of RGB are used. In the second embodiment, several examples of using RGBW sub-pixels to which white (hereinafter, referred to as “W”) sub-pixels are added will be described. In still another embodiment, a configuration using yellow instead of white may be used, and an arrangement pattern as described below may be applied.

  Note that the points other than the arrangement of the sub-pixels in the stereoscopic pixel 120, that is, the hardware configuration and the like of the display device 100 are basically the same as those in the first embodiment described above. is there. Therefore, the following mainly describes the arrangement pattern of the sub-pixels in the stereoscopic pixel 120 using RGBW.

(Arrangement pattern 6)
FIG. 24 is a diagram illustrating an example of an arrangement of sub-pixels in a stereoscopic pixel 120 according to the second embodiment. Hereinafter, the arrangement pattern shown in FIG. 24 is referred to as “arrangement pattern 6 ”. Also, this figure shows a case where the screen is a “vertical screen”.

  The stereoscopic pixel 120 illustrated in FIG. 24 includes two pixels that are adjacent in the horizontal direction, that is, a right-eye pixel 121 and a left-eye pixel 122, as in the first embodiment.

  In the arrangement pattern 6, each of the right-eye pixel 121 and the left-eye pixel 122 includes six sub-pixels, and the total number of sub-pixels included in the stereoscopic pixel 120 is twelve. This arrangement pattern is similar to the arrangement pattern 2 in the first embodiment, and is a pattern in which four W sub-pixels are arranged outside the annular pattern of the sub-pixels of the arrangement pattern 2. Specifically, the arrangement pattern 2 is a pattern in which W sub-pixels are additionally arranged in rows and columns where R and B sub-pixels are present. That is, W sub-pixels are arranged at the right end positions of the first and third rows, respectively. Also, W sub-pixels are arranged at the lower end positions of the first and third columns, respectively. In other words, the W sub-pixel is located at a position adjacent to the R or B sub-pixel and not adjacent to the G sub-pixel.

  When the sub-pixel located at the upper left of the stereoscopic pixel 120 is regarded as a starting point, the sub-pixels are arranged in the rightward and downward directions from the subpixel in the order of R, G, B, and W (the same order). Have been.

  In addition, when viewed as a whole of the stereoscopic pixel 120, as in the arrangement pattern 2, the color of a certain sub-pixel is a sub-pixel substantially symmetrical with respect to a diagonal line extending from upper left to lower right of the stereoscopic pixel. Are arranged in the same color as the color of

  Further, similarly to the arrangement pattern 2, the arrangement is such that the color of a certain sub-pixel is the same as the color of a pixel substantially symmetrical with respect to a specific position of a stereoscopic pixel.

  In the arrangement pattern 6, the vertical and horizontal sides of each of the sub-pixels arranged in the stereoscopic pixel 120 have the same length and the same area. Therefore, in the arrangement pattern 6, in each of the vertical screen and the horizontal screen state, the horizontal width of the sub-pixel in the horizontal direction viewed from the observer is a ratio of the horizontal width of the R and B sub-pixels to the horizontal width of the G sub-pixel. Is 1: 1.

  The control of the stereoscopic pixels 120 using the arrangement pattern 6 is basically the same as the control in the first embodiment.

  FIGS. 25 to 26 show examples of control of the stereoscopic pixels 120 in the case of the arrangement pattern 6. FIG. FIG. 25 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 26 shows a color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, control is performed so that even-numbered sub-pixels from the left in the arrangement order are not colored in the vertical direction, starting from the sub-pixel located at the upper left of the stereoscopic pixel 120. In the example of FIG. 25, control is performed so that the G sub-pixel in the second column from the left and the W sub-pixel in the fourth column are not colored. On the other hand, in the “horizontal display mode”, a control is performed such that an even-numbered sub-pixel from the top is not colored in the left-right direction with the sub-pixel located at the upper left of the stereoscopic pixel 120 as a starting point. In the example of FIG. 26, control is performed so that the G sub-pixel in the second row from the top and the W sub-pixel in the fourth row are not colored. That is, as in the case of the arrangement pattern 1 and the like, the image control unit 50 sets the sub-pixel located at the upper left of the stereoscopic pixel 120 as a start point and sets even-numbered sub-pixels in the arrangement order in the horizontal display mode. The control is performed such that the color is selectively formed or not depending on whether the display mode is the vertical display mode.

  In the arrangement pattern 6, the length (width) of each side of the sub-pixel to be colored and the sub-pixel not to be colored is the same.

  Even when control using the arrangement pattern 6 is performed, basically the same effect as that of the arrangement pattern 1 is obtained. That is, in the case of the “vertical screen” or the “horizontal screen”, the amount of RGB and W incident on both eyes of the observer when the observer's viewing position changes is similarly increased or decreased. it can.

(Arrangement pattern 7)
Next, still another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern shown in FIG. 27 is referred to as “arrangement pattern 7”. This figure also shows a case where the screen is a “vertical screen”.

  The arrangement pattern 7 shown in FIG. 27 is obtained by adding four sub-pixels of W to the arrangement of the arrangement pattern 4 of the first embodiment described above. More specifically, the position under the B sub-pixel in the first column in the arrangement pattern 4, the position in the third column in the second row, and the position in the fourth column in the first and third rows And a pattern in which W sub-pixels are arranged (both are located adjacent to the R or B sub-pixels). The size of each sub-pixel is the same. Therefore, even in the arrangement pattern 7, in each of the vertical screen and the horizontal screen state, the horizontal width of the sub-pixel in the horizontal direction viewed from the observer is the ratio of the horizontal width of the R and B sub-pixels to the horizontal width of the G sub-pixel. Is 1: 1.

  In the arrangement pattern 7, when the upper left of the stereoscopic pixels 120 (the position of the first column and the first row) is viewed as a starting point, the sub-pixels are arranged in the order of R, G, B and W in the rightward and downward directions, respectively ( (Same order).

The control of the stereoscopic pixels 120 using the arrangement pattern 7 and the obtained effects are the same as those of the arrangement pattern 5 described above. FIGS. 28 to 29 show examples of control of the stereoscopic pixels 120 in the case of the arrangement pattern 7. FIG. FIG. 28 shows the color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 29 shows the color development state of the stereoscopically viewed pixels 120 in the “horizontal display mode”. In the "portrait mode", as a starting point a sub-pixel located at the upper left of a stereoscopic pixel 120, the even-numbered sub-pixels in the horizontal direction, in the example of FIG. 28, a sub-pixel of the G in the second column from the left 4 Control is performed so that the W sub-pixel in the column is not colored. On the other hand, in the “horizontal display mode”, the sub-pixel positioned at the upper left of the stereoscopic pixel 120 is set as a starting point, and the even-numbered sub-pixel is arranged in the vertical direction in the arrangement order. In the example of FIG. Control is performed so that the G and W sub-pixels in the row are not colored.

(Arrangement pattern 8)
Next, still another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern shown in FIG. 30 is referred to as “arrangement pattern 8”. This figure also shows a case where the screen is a “vertical screen”.

  The arrangement pattern 8 shown in FIG. 30 is obtained by adding four W sub-pixels to the arrangement of the arrangement pattern 3 described above. Specifically, the arrangement pattern 3 is a pattern in which W sub-pixels are arranged in four unarranged areas 126 located on a diagonal line extending from upper right to lower left. Each sub-pixel has the same size. Therefore, in the arrangement pattern 8 as well, in each of the vertical screen and the horizontal screen state, the horizontal width of the sub-pixel in the horizontal direction viewed from the observer is the ratio of the horizontal width of the R and B sub-pixels to the horizontal width of the G sub-pixel. Is 1: 1.

  When the sub-pixel located at the upper left of the stereoscopic pixel 120 is considered as a starting point, the sub-pixels are arranged so as to be arranged in the order of R, G, B, and W in the rightward and downward directions, respectively.

The control of the stereoscopic pixels 120 using the arrangement pattern 8 and the obtained effects are the same as those of the arrangement pattern 5 described above. FIGS. 31 to 32 show examples of control of the stereoscopic pixels 120 in the case of the arrangement pattern 8 . FIG. 31 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 32 shows the color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, an even-numbered sub-pixel in the horizontal direction starts from a sub-pixel located at the upper left of the stereoscopic pixel 120, and in the example of FIG. Control is performed so that the W sub-pixel is not colored. On the other hand, in the “horizontal display mode”, the sub-pixel located at the upper left of the stereoscopic pixel 120 is set as a start point, and the even-numbered sub-pixels in the arrangement order in the arrangement order. Is controlled so that the G and W sub-pixels are not colored.

(Arrangement pattern 9)
Next, still another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern illustrated in FIG. 33 is referred to as “arrangement pattern 9”. This figure also shows a case where the screen is a “vertical screen”.

  The arrangement pattern 9 shown in FIG. 33 is a pattern similar to the arrangement pattern 5 of the above-described first embodiment. Specifically, it is a pattern obtained by adding two W sub-pixels to the arrangement of the arrangement pattern 5. The size of the W sub-pixel is the same as that of the R or B sub-pixel. The arrangement position is the fourth column in the arrangement pattern 5 and is arranged at a position adjacent to the R or B sub-pixel.

  Next, control of the stereoscopic pixels 120 using the arrangement pattern 9 will be described. Basically, similarly to the above-described arrangement patterns, even-numbered sub-pixels in the arrangement order (in FIG. 33, any G sub-pixel ) Is selectively controlled according to whether the mode is the “vertical display mode” or the “horizontal display mode”.

  34 to 35 show examples of controlling the stereoscopic pixels 120 in the case of the arrangement pattern 9. FIG. FIG. 34 shows a color development state of the stereoscopic pixel 120 in the “vertical display mode”. FIG. 35 shows a color development state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, starting from a sub-pixel located at the upper left of the stereoscopic pixel 120, an even-numbered sub-pixel in the horizontal direction, and in the example of FIG. Control is performed so that the W sub-pixel in the column is not colored. On the other hand, in the “horizontal display mode”, the sub-pixel positioned at the upper left of the stereoscopic pixel 120 is set as a starting point, and the even-numbered sub-pixels in the arrangement order in the arrangement order. In the example of FIG. Control is performed so that the G sub-pixel in the row is not colored. In the case of this arrangement pattern 9, unlike the above arrangement patterns 6 to 8, the control is performed such that the W sub-pixel is colored in the "horizontal screen" but not in the "vertical screen". Become. However, for the R, G, and B sub-pixels, the same effects as those of the above arrangement patterns can be obtained. In view of the fact that the W sub-pixel is colored / not colored depending on the vertical / horizontal screen, the following control may be performed in another embodiment. That is, the correspondence between RGB and RGBW may be set in advance, and the color development of RGBW may be controlled according to the correspondence. For example, the correspondence between the values of RGBW for expressing white using only RGB and the case of expressing white using RGBW may be set in advance, and control based on this may be performed.

(Arrangement pattern 10)
Next, still another example of the arrangement of the sub-pixels will be described with reference to FIG. Hereinafter, the arrangement pattern shown in FIG. 36 is referred to as “arrangement pattern 10”. This figure also shows a case where the screen is a “vertical screen”.

  The arrangement pattern 10 shown in FIG. 36 is a pattern similar to the arrangement of the arrangement pattern 9 described above. Specifically, in the arrangement pattern 9, the arrangement pattern is such that the positions of the G sub-pixel and the W sub-pixel in the third row are interchanged. The other points are the same as the above-described arrangement pattern 9.

The control of the stereoscopic pixels 120 using the arrangement pattern 10 is the same as that of the arrangement pattern 9 . That is, starting from the sub-pixel located at the upper left of the stereoscopic pixel 120, the even-numbered sub-pixel in the arrangement order (in FIG. 36, any G sub-pixel) is placed in the vertical display mode or the horizontal display mode. Control is performed such that color is selectively displayed or not depending on the display mode.

FIGS. 37 to 38 show examples of control of the stereoscopic pixels 120 in the case of the arrangement pattern 10. FIG. FIG. 37 shows a color development state of the stereoscopically viewed pixels 120 in the “vertical display mode”. FIG. 38 shows a color-developed state of the stereoscopic pixel 120 in the “horizontal display mode”. In the “vertical display mode”, the sub-pixel located at the upper left of the stereoscopic pixel 120 is set as a starting point, and the even-numbered sub-pixels in the horizontal direction. In the example of FIG. Control is performed so that the W sub-pixel is not colored. On the other hand, in the “horizontal display mode”, the sub-pixel located at the upper left of the stereoscopic pixel 120 is set as a starting point, and the even-numbered sub-pixel in the vertical direction in the arrangement order. In the example of FIG. Control is performed so that the G sub-pixel in the row is not colored. As with the arrangement pattern 9 , the W sub-pixel is controlled so that it is colored in the “horizontal screen” but not in the “vertical screen”. For the R, G, and B sub-pixels, the same effects as those of the above arrangement patterns can be obtained.

  As described above, in the second embodiment, the stereoscopic pixel 120 is configured to use the W sub-pixel in addition to the RGB. Accordingly, even when the position of the observer's both eyes changes slightly from right to left from a position appropriate for viewing the stereoscopic display, the amount of RGB incident on the observer's both eyes is similarly increased or decreased. Can be. When the above arrangement patterns 6 to 10 are used, the same effect can be obtained for the W sub-pixel.

  In addition, in the above examples of the various arrangement patterns, the case where the shape of the sub-pixel is a square or a rectangle (square) is illustrated. However, the shape of the sub-pixel is not limited to a circle or an ellipse. There may be. Furthermore, other polygonal shapes may be used. FIG. 39 shows an example of the arrangement pattern 1 in which the shapes of the sub-pixels are different. Even when such a shape is used, the same effect as described above can be obtained.

  Also, the area (size) of the sub-pixel is not limited to the above example, and the size may vary. The size of the sub-pixel may be any size as long as the above arrangement pattern is obtained.

  In the arrangement pattern 1, R, G, and B sub-pixels are arranged in odd-numbered columns and rows counted from the upper left, and only G sub-pixels are arranged in even-numbered columns. In another embodiment, the pattern may be inverted left and right. FIG. 40 is an example of an arrangement pattern in which the arrangement pattern 1 is reversed left and right. In this pattern, the arrangement of the sub-pixels is line-symmetric with respect to a diagonal line extending from upper right to lower left. Regarding the control of stereoscopic pixels, the sub-pixels located at odd-numbered rows and columns starting from the upper left corner are control targets for color development / non-color generation. In addition, the arrangement pattern may be inverted upside down. In other words, the arrangement may be such that the first to fourth rows in the arrangement pattern 1 are arranged in reverse order from above. Further, an arrangement pattern in which the upper, lower, left, and right sides are inverted may be used.

  The display device 100 may be configured to be able to display a two-dimensional image in addition to the three-dimensional image. For example, the liquid crystal display may be configured to selectively form a state in which a plurality of parallax images are displayed in accordance with the number of stereoscopic viewpoints and a state in which a single planar image is displayed as a whole. . The viewer may be configured to be able to switch between displaying the stereoscopic image and displaying the planar image. In such a case, the sub-pixels having the above-described arrangement pattern are also used for displaying a planar image. In this regard, the following configuration may be employed. For example, a sub-pixel used only when displaying a planar image may be arranged in the unarranged area 126 in the arrangement pattern 1. FIG. 41 shows an example of such an arrangement pattern. In the example of FIG. 41, a white sub-pixel is arranged in the unarranged area 126 in the arrangement pattern 1. In such an arrangement pattern, the white sub-pixel may be controlled so as not to be used when performing stereoscopic display but to be used only when displaying a planar image. This makes it possible to increase the brightness of the screen or reduce the power consumption by the backlight when displaying a planar image.

  Further, in the above-described embodiment, the case where the sub-pixels of three or more colors are included in the stereoscopic pixel 120 has been exemplified. In another embodiment, the colors of the sub-pixels included in the stereoscopic pixel 120 may be only two colors. Even in this case, the amount of color incident on both eyes of the observer can be increased or decreased at the same rate.

  Further, in the above-described embodiment, the case where two barriers of the vertical screen parallax barrier 30A and the horizontal screen parallax barrier 30B are used is shown as an example, but in other embodiments, this is realized by one barrier. You may do it. For example, as shown in FIG. 42, one parallax barrier in which square barriers are arranged in a matrix (as a whole) is used. Then, control may be performed to individually turn on / off each of the barriers arranged in a matrix according to whether the screen is in the vertical screen state or the horizontal screen state. FIG. 43 shows a control example of the barrier in a vertical screen state, and FIG. 44 shows a control example of the barrier in a horizontal screen state. FIG. 42 shows a state where barriers in the second, fourth, sixth, and eighth columns are turned on. FIG. 43 shows a state where the barriers in the second and fourth rows are turned on. With such control, a configuration may be such that a single parallax barrier realizes both functions of a vertical screen and a horizontal screen parallax barrier.

Reference Signs List 10 image display unit 50 image control unit 60 determination unit 100 display device

Claims (17)

A display device that displays a stereoscopic image configured by a right-eye image and a left-eye image,
An image display unit in which a plurality of stereoscopic pixels constituted by right-eye pixels and left-eye pixels are arranged in a plurality of horizontal and vertical directions,
Display mode setting means for setting at least one of the vertical display mode and the horizontal display mode,
Parallax barrier forming means for forming a parallax barrier according to the setting by the display mode setting means,
An image control unit that controls the image display unit according to the setting by the display mode setting unit,
Each of the right-eye pixel and the left-eye pixel includes at least one or more red, blue, and green sub-pixels, respectively, and at least one unarranged area where no sub-pixel is arranged is provided. , Two sub-pixels of the same color that are vertically and horizontally adjacent to at least one unarranged area are arranged,
The image control unit,
When the vertical display mode is set, the sub-pixels of the column including the non-arranged area are not colored, and the sub-pixels of the left-eye pixel and the right-eye pixel other than the sub-pixels that are not colored Color of all of the sub-pixels of
When the horizontal display mode is set, the sub-pixels of the left-eye pixels and the right-eye pixels are not colored so that the sub-pixels of the row including the unarranged area are not colored. A display device that emits all colors of sub-pixels other than pixels.   The display device according to claim 1, wherein the sub-pixels arranged vertically and horizontally adjacent to the unarranged area are sub-pixels of any one of red, blue, and green.   The display device according to claim 2, wherein the sub-pixels arranged vertically and horizontally adjacent to the unarranged area are green sub-pixels.   The number of sub-pixels in each of the right-eye pixel and the left-eye pixel of a color arranged vertically and horizontally adjacent to the unarranged area is larger than the number of sub-pixels of other colors. Item 4. The display device according to any one of Items 1 to 3. 5. The stereoscopic pixel according to claim 1, wherein a total area of sub-pixels in a column or a row including the non-arranged area is larger than a total area of each of sub-pixels of another color that is not a color of the sub-pixel. The display device according to any one of the above. 2. In the stereoscopic pixel, in a column or a row including the unarranged area, no sub-pixel having a color other than the color of a sub-pixel arranged vertically and horizontally adjacent to the unarranged area is not arranged. 6. The display device according to any one of items 5 to 5.   7. The stereoscopic pixel according to claim 1, wherein at least one or more red, blue, and green sub-pixels are arranged in a column and a row adjacent to a column and a row including the unarranged area. 8. The display device according to any one of the above.   The display device according to claim 1, wherein at least four sub-pixels can be arranged in each of the stereoscopic pixels in a horizontal direction and a vertical direction.   The display device according to claim 1, wherein a width of each sub-pixel in a column or a row including the unarranged region is smaller than a width of another sub-pixel.   The display device according to claim 1, wherein a width of each sub-pixel of a column or a row including the unarranged region is substantially the same as a width of another sub-pixel.   11. At least one sub-pixel that is not colored at least when displaying a stereoscopic image is provided at a position adjacent to a sub-pixel in a row or a column including the unarranged area. 12. The display device according to one of the above.   The display device according to any one of claims 1 to 11, wherein the stereoscopic pixel includes at least one or more sub-pixels of colors other than red, blue, and green.   13. The display device according to claim 12, wherein the color of the sub-pixel other than red, blue, and green is at least one of yellow and white.   In the stereoscopic pixel, the color of one sub-pixel is the same as the color of the sub-pixel at a position substantially symmetrical with respect to a diagonal line extending from upper left to lower right or from upper right to lower left of the stereoscopic pixel. The display device according to any one of claims 1 to 13, wherein each of the sub-pixels is arranged as described above.   In the stereoscopic pixel, each sub-pixel is arranged such that the color of one sub-pixel is the same as the color of the sub-pixel at a position substantially point-symmetric to a specific position of the stereoscopic pixel. The display device according to any one of claims 1 to 14, wherein the display device comprises:   The arrangement order of the red, blue, and green sub-pixels in a predetermined direction in one of the right-eye pixel and the left-eye pixel, and the arrangement order of the red, blue, and green sub-pixels in the predetermined direction in the other. The display device according to claim 1, wherein the sub-pixels are arranged so as to be different from each other.   In the stereoscopic pixel, at least one red, blue, and green sub-pixels are arranged in a predetermined order in the horizontal direction with the upper left or upper right as a starting point, and also in the vertical direction, at least one red, blue, and green sub-pixels are arranged. 17. The display device according to claim 1, wherein the sub-pixels are arranged in the same order as the predetermined order.

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